Mortar for stamp-mills.



E. H. MOYLE.

MORTAB. POR STAMP MILLS.

APPLICATION FILED PEB. 24.

Patented Deo. 15, 1914.

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MORTAR FOB. STAMP MILLS.

APPLIGATION FILED 15.24, 1905.

Patented Dec. 15, 1914.

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EDWARD H. MOYLE, OF LOS AN(Ii-lill.ES,` CALIFORNIA.

MORTAR FOR S-TA'MP-KVIILLS.

Specification of Letters Patent.

PateiitedDec. 15, 1914..

Application filed February 24. 1905. Serial No. 247,087.

To all whom, t may concern Be it known that I.. EDWARD HENRYV Meyrin, a citizen of the United States, residing at Los Angeles, in the county of Los ngeles and State of California, have invented new and useful improvements in Mortars for Stamp-Mills, of which the following is a specification.

This invention relates to improvements in niortars, and the main object of my invention is to provide a means for distributing the ore to be crushed, to each stamp separately of the others, and to distribute the ore b y circular means, or all around the stamp.

Another object is to have free observation and access to the stamps when standing at 'the plate side.

Another object is to provide a means whereby the stem-guide can be placed at the lowest possible position on the stem of the stamp.

Another objectis to decrease the height as much as possible, as well as the weight of the mortar.

Another object is to prevent the cupping or uneven wearing of the die and the stamp.

Another object is to reduce the liability7 o't' breakage oi' the stamp-stem at the place where it enters the stamp-head.

Another object is to increase the capacity or crushing effect of the stamp with the least amount of shining and with the same amount of horse-power.

Another object is to provide a means whereby the screen on the feeder side can be as large. or larger, than on the plate side. .y

Another object is to provide a means which will avoid'the constant attention VofV the attendant for keeping the ore feed-chute clear.

The accompanying drawings illustrate the invention.

Figure 1 is a plan view of a mortar constructed with five stamps. Fig. 2 is a lone gi tu dinal. vertical section on the line Vif-W ot Fig. 1. Fig. 3 is a transverse, vertical section on the line .i1-w, of Fig. 1. Fig. 4 is a plan of the mortar. showing a diierent 't'orm of launder. Fig. 5 is a transverse, vertical section on the line ,i/*fz of Fig. el. Fig. 6 is an end elevation of the motar shown in plan, Fig. 4. Fig. 7 is a longitudinal. vertical, sectional view of a different toi-1n of motar. Fig. 8 is a transverse, vertical, sectional view of the same. Fig. 9 is a longitudinal, vertical view of another `form oi mortar. Fig. l0 is a broken Sectional view similar to Fig. 9 showinganother form of mortar.

ln the operation of stamp mills, the system most generally used is to have one stamp regulate the feed of itself and of the other stamps. by having the ore Vconveyed through a rectangular chute-box at the the ore principally toy the middle stamp and dropping at the back of stamp to take itsV place on the die to be crushed and Ydis-` tributed when tlie stamp is dropped; While` i'eeder side ot mortar, said chute conveying therefore .dropped evenly around the die,

which prevents the cupping or `uneven wear-A ingot' the die. ing of stems above the stamp-head, as the stamp is always striking squarely on ore.l

lt also provides a means whereby the ore can be ted mechanically or regularly to each stamp independently of the others, thereby4 obtaining the greatest crushing capacity.

ln the accompanying' drawings it will be noticed that Vas the ore is fed around the stamp. said stamp in raising and lowering will release the ore, if necessary, thereby keeping the circular chuteclear and also helping to distribute the ore around the stamp. as the stamp in its raising movement is revolved by the contact of the lifting-cam and tappet which is located upon thesteml (not shown). n

lt is not so material as to how the o're is conveyed to one common point upon theV plate side. although I have shown two systems in the accompanying drawing, either of which I wish to combine with the circular `feeding device, but it is not necessary to have the discharge-screens all around the stamps, as shown, as the mortar can be built with one or more screens as required.

Referring more particularly to the draW- ings. l indicates the mortar, which may be ot any suitable shape and size, the one shown in the drawings being rectangular and adapted to receive or be operated by five stamps of any desired or usual construction.

The mortar is provided with the usual flange or base 2 which is perforated as at 3,

It also prevents the brealty by means of which it is secured in position. y,

` of the mortar Extending around the mortar, or on all sides thereof, is a screen 4, which is of the usual construction, and is secured in position by Wedges 5. If desired, a splashboard, not shown, may be seated in grooves G in front of the screens. Check-blocks 7 are locatedl upon the inside of the mortar and have'their inner lfaces covered With amalgamating plates in the usual manner.

Between the different dies 8, l prefer to arrange dividing vvall's or partitions 9, which preferably extend a slight distance above the upper faces of thedies, as shown in Fig. 2, although they may terminate at a.v lower point, as indicated by dotted lines in said figure.

Extending' entirely around the exterior belowA the screens is a launder 10 which is adapted to receive crushed material from any yof the screens and vconduct it tothe front of the mortar, Where it ter- `min'ates` in a lip 11. In the `form of mortar shown in Figs. 1, Qand 3, channels 12 are formedthrough the mortar below thel stamps so as to conduct the material directly from the rear to` the front Without its having to pass around the ends of the mortar,l thereby avoiding the possibility of overflowing the launder at the ends of the mortar. In the form of mortar shown in -Fig'sl;(. 4, 5 and 6,Wl'1`ere the launder ,extends areund the mortar, the rear licor and Wall are" inclined from the central portion to each'end, thereby causing the material to freely fl'oW down hill and be discharged through the inclinedv channels at the ends of the mortar.

The feeding of the ore to the mortar is effected by arranging a receptacle 13 having, an linclined bottom divided into a plurality of sections, the sections forming the receptacle 13, having a central opening for r` 'receiving' the stamp and inclining downe the head and the ring. and thereby being W'ardly. toward `the stamp at all sides, so as to form an ore guide or feed-chute 13 for eachfsamp' and each vof said top platesec-y tionshavlng a centralgopenmg for receiving the sta-mp so as to form 'a ringaround each'fstamp of an internal diameter enough larger than the diameter of the' stamp-head 14 to permit of the ore passing between dropped all around the stamp, said top plate is preferably formed with side portions or Walls removably fastened to the Walls of the mortar and with a depressed bottom extending preferably at an angle to the plane of the stamps and forming ore guide or chute rings, the top` plate constituting a trough or receptacle for receiving the ore,

said receptacle surrounding all the stamps and communicating from end to end of the mortar around all the stamps so that ore feeding thereinto will be distributed by gravity and by agitating effect of the stamps from end to end thereof, and Will pass into the several ore guides directly around their respective stamps, giving a separate feed for each stamp, supplied from a common source. This Will cause the ore to be fed on tothe die uniformly from all points which will increase the crushing capacity of each stamp and also avoid liability of breaking the stem 15 by having the ore evenly distributed over the face of the die and causing the force of the shoe to be evenly distributed.

rihe annular feedingchute may be varranged horizontally in the top of the morof the mortar and may be secured thereto by means of bolts 17. l y

,A flange 18 may be formed at the upper end of the neck so as to rest on top of the Which Water is introduced to the mortar-` from a pipe or manifold 23, at one side of the mortar, the Water escapmg from said goose neck' or passage through .recesses 20,

forming With said passage 22, substantiallyv av 'l'. The upper portion or bend of the vgoose-neck is located at such a distance above the normal surface of the Water in the mortar that it will be impossible for the pipe to beiilled With pulp or material from thev mortar. The passages extending from the goosenecl each Way, to the adjacent mortars, form an inverted T-shaped passage, capable ofv being cleaned out by Washing through the passage from compartment to compartment. f

In this manner the danger of any pipe becoming clicked up is avoided, and at the same time thek Water is discharged into the compartments in a small stream at opposite l mortar andthereby assist in Vholding it in y l prefer constructing the feedsides of the dies which 'Will cause suchV a stirring up or ebullition of the materialaround the die as lwill cause they pulp or Waste material to be constantly carried away, and thereby permit of the ,deposition around each die of thel amalgam or more valuable particles of ore being crushed. The flow of water tothe goosenecks can be regulated by a valve 2% between them and the manifold lIn Fig. 9. the partitions 25 are formed integral with the feed-chute 26 and extend down to the bottom of the interior of the mortar where they are preferably seated in channels Q7 between the dies 8. In the construction shown in Fig. l0, the partitions "28 are formed separate from the feed-chute and are seated in channels 29 in the mortar with sufficient rigidity to hold them upright between the respective stamp and dies.

.\s above described, it is evident that the feeding of the ore to the mortar can be much more uniform than where it is fed to the central stamp from the rea-r and distributed from that point to the end stamps, and thereby the crushing capacity of the mill is correspondingly increased, and the danger of breakage caused by having the blows of the stamps expended at one side or edge, which will also have a tendency to break the stem through uneven strain or pressure.

By feeding the ore centrally or around each stamp, a larger discharge area is secured, as the screens can be extended entirely around the mortar; and by providing partitions between the different stamp and dies a more uniform result is secured, as the mortar is substantially divided into a series ot single mortars each of which is fed, controlled and operated independently of all of the others. Another advantage arising from feeding the ore around each stamp is that the process of feeding can be observed from any point around the mortar, and thereby any temporary choking up of any one of the feed openings Vcan be quickly remedied and thereby a more uniform feed is secured. It also permits of the ore and the ring forming a stem-guide which assists in Vsteadying the stamp as itis reciprocated,

and also reduces the height of the mortar to the lowest possible point and thereby correspondingly decreases its weight.

Having described my invention,I claim 1. The combination with a mortar and a plurality of stamps therein, of an ore receptacle surrounding the stamps and having downwardly extending ore feeding flanges, the planes of said flanges being inclined to the axis of the stamps, and provided with apertures of greater diameters than those of the stamps to permit the passa ge of ore around the stamps.

2. InV combination with a mortar. a plurality of stamps and dies therein, a pluralityV of partitions in the mortar, each provided with a goose neck passage which terminates below the top of said dies, means to supply water to said passages, and ore feeding receptacles surrounding said stamps.

and dies, of partitionsin the mortar forming separate compartments for each stamp, Y

each of said partitions having a goose neck passage formed therein and terminating below the top of said dies in substantially a T-V form to afford communication with eachV compartment, and means to supply water to said passages.

l. In combination with a mortar and a plurality'of stamps therein, an ore receptacle surrounding the stamps and havingits bottom formed with a plurality of openings to receive the stamps, said receptacle form-V ing annular ore guides surrounding the stamps, and said openings being eccentric' to the respective stamps.

5. In combination with a mortar and a plurality` of stamps therein, an ore receptacle surrounding the stamps and formed at its bottom with stamp-receiving openings eccentric to the respective stamps, the bottom of the receptacle being higher at the side where the space between the stamp and the receptacle is -narrowest.

6. In combination with a mortar and a plurality of stamps therein, an ore receptacle surrounding the stamps and having its bottom extending at an inclination to the stamps and provided with openings to re` ceive the stamps and to form ore guides sur rounding the stamps, the space between the stamp and the receptacle being narrower on the higher side and being sloped inward toward the openings.

7. In combination with a mortar and a plurality of stamps therein, of an oie receptacle surrounding the stamps and provided with depressed flanges the planes of which are inclined to the axis of the stamps, said flanges having stamp receiving openings forming ore guides around said stamps.

8. In combination with a stamp millmortar, stamps, and dies therein, of a plurality of partitions forming separate compartments for each stamp, and an individual ore feeding guide for and surrounding each Y stamp, said guides disposed at the top of said mortar.

9. The combination with a mortar, dies and stamps working therein, of partitions in said mortar forming compartments Veach provided with an openingrto Vafford communication with Veach compartment, and each partition having an upwardly and downwardly extending internal passage communicating with said opening, and means to supply water to said passage.

10. The combination, with a mortar pro` vided with hollow partitions, of a gooseneck in each partition having openings'in each side of the partition forming an inverted Tsshaped passage communicating with tho mortars at Veach side of the partition, said goose-neck extending upwardly and then downwardly tothe point of disoharge, and stamps and dies between said partitions.

l1. The combination with a mortar, dies and stamps Working therein, of partitions in ,said mortar forming separate compartments for each stamp and die, each of said partitions having a horizontal opening on a piane lower than the face of said dies to afford communication with each compartment, each 1.0- partition also having an internal passage communicating' with .said opening, and

means to supplywater vto said passage.

In testimony whereof, I have hereunto set mv hand at Los Angeles, California, this 8th W. S. BOYD,

JULIA TOWN SEND.

Washington, D. C.

Copieilof this patent may be obtained for five cents ealchby addressing the Commissioner ofk Patents, 

